Tetsuya Mizuguchi (Rez, Tetris Effect) created Lumines for the PlayStation Portable because he saw Sony's new device as an "interactive walkman", one where portable music and gameplay could be combined into something beautiful. And so it was, with Lumines' simple four-colour block gameplay proving extremely popular. Players aim to match up blocks of the same colour, but the music dictates the rate at which they're cleared, and it's easy to fall into a hypnotic, focused trance as you play.